inkyblackness · dertseha · Dec 25, 2019 · Oct 29, 2019
diff --git a/FreeType.go b/FreeType.go
@@ -0,0 +1,38 @@
+package imgui
+
+// #cgo pkg-config: freetype2
+// #include "FreeTypeWrapper.h"
+import "C"
+import (
+	"errors"
+)
+
+const (
+	// By default, hinting is enabled and the font's native hinter is preferred over the auto-hinter.
+	FreeTypeRasterizerFlagsNoHinting     = 1 << 0 // Disable hinting. This generally generates 'blurrier' bitmap glyphs when the glyph are rendered in any of the anti-aliased modes.
+	FreeTypeRasterizerFlagsNoAutoHint    = 1 << 1 // Disable auto-hinter.
+	FreeTypeRasterizerFlagsForceAutoHint = 1 << 2 // Indicates that the auto-hinter is preferred over the font's native hinter.
+	FreeTypeRasterizerFlagsLightHinting  = 1 << 3 // A lighter hinting algorithm for gray-level modes. Many generated glyphs are fuzzier but better resemble their original shape. This is achieved by snapping glyphs to the pixel grid only vertically (Y-axis), as is done by Microsoft's ClearType and Adobe's proprietary font renderer. This preserves inter-glyph spacing in horizontal text.
+	FreeTypeRasterizerFlagsMonoHinting   = 1 << 4 // Strong hinting algorithm that should only be used for monochrome output.
+	FreeTypeRasterizerFlagsBold          = 1 << 5 // Styling: Should we artificially embolden the font?
+	FreeTypeRasterizerFlagsOblique       = 1 << 6 // Styling: Should we slant the font, emulating italic style?
+	FreeTypeRasterizerFlagsMonochrome    = 1 << 7 // Disable anti-aliasing. Combine this with MonoHinting for best results!
+)
+
+// BuildFontAtlasFreeType builds the FontAtlas using FreeType instead of the
+// default rasterizer. FreeType renders small fonts better. Make sure to call
+// `FontAtlas.BuildFontAtlasFreeType()` *BEFORE* calling
+// `FontAtlas.GetTexDataAsRGBA32()` or `FontAtlas.Build()` (so normal Build()
+// won't be called)
+func (atlas FontAtlas) BuildFontAtlasFreeTypeV(flags int) error {
+	if C.iggImGuiFreeTypeBuildFontAtlas(atlas.handle(), C.uint(flags)) == 0 {
+		return errors.New("Failed to build FreeType FontAtlas")
+	} else {
+		return nil
+	}
+}
+
+// BuildFontAtlasFreeType calls BuildFontAtlasFreeTypeV(0)
+func (atlas FontAtlas) BuildFontAtlasFreeType() error {
+	return atlas.BuildFontAtlasFreeTypeV(0)
+}
diff --git a/FreeTypeWrapper.cpp b/FreeTypeWrapper.cpp
@@ -0,0 +1,9 @@
+#include "imguiWrappedHeader.h"
+#include "imgui_freetype.h"
+#include "FreeTypeWrapper.h"
+
+int iggImGuiFreeTypeBuildFontAtlas(IggFontAtlas handle, unsigned int flags)
+{
+   ImFontAtlas *fontAtlas = reinterpret_cast<ImFontAtlas *>(handle);
+   return ImGuiFreeType::BuildFontAtlas(fontAtlas, flags);
+}
diff --git a/FreeTypeWrapper.h b/FreeTypeWrapper.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#include "imguiWrapperTypes.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+extern int iggImGuiFreeTypeBuildFontAtlas(IggFontAtlas handle, unsigned int flags);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/go.mod b/go.mod
@@ -1,3 +1,5 @@
 module github.com/inkyblackness/imgui-go
 
 require github.com/stretchr/testify v1.3.0
+
+go 1.13